 He left the team ranked third in franchise history in games played (184).To this day, he is still tied for second-place all-time for years of service with the team, trailing only Johnny Unitas who spent 17 years with the franchise.On April 20, 1993, Donaldson signed as a free agent with the Seattle Seahawks and anchored an offensive line that helped the team lead the AFC in rushing for the first time in franchise history with 2,015 yards.